vscode server on mac ssh UnpackFailed, probably using wrong tar

[AwesomeDog]

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: 1.96.2 for client
• OS Version: mac sequoia 15.2 for the remote server

Steps to Reproduce:

1. install a tar (GNU tar) 1.35 on mac
2. ssh to that mac using vs remote
3. got error
   Status UnpackFailed

the log is:
[18:06:19.890] > tar --version: tar (GNU tar) 1.35

Copyright (C) 2023 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later https://gnu.org/licenses/gpl.html.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by John Gilmore and Jay Fenlason.
[18:06:19.905] >
[18:06:19.920] > tar: This does not look like a tar archive
tar: Skipping to next header
tar: Exiting with failure status due to previous errors
[18:06:19.929] >
ERROR: tar exited with a non-zero exit code: 2
Already attempted local download, failing

what is the cause of this? I tried to alias tar=/usr/bin/tar in ~/.bash_profile but the problem persists.